Ideally this is the case
In my experience this is true only if the thermal is
smooth and uniform. If this is not the case then it
may be best to follow the surge as the glider passes
through stronger rising air. This would be indicated
by the glider accelerating, at this point you would
hold / pitch up to your normal best bank/minimum sink
speed. When reversed the speed wants to bleed off,
at that point one would want to pitch down. The later
does not happen to often in a thermal as there is
residual positive lift. The key is to watch for those
acceleration which at times can be pronounced and one
has to respond very quickly to take advantage of that.
If the response is quickly the flight path can still
look smooth but as a surge becomes stronger the flight
path may become erratic looking. Also there is the
point of maybe opening or tightening up the turn as
the surge may indicate the centre of the thermal. For
an other glider pilot watching from an other point
of view, this may not look as pretty but it is effective.
Regards
Udo




At 14:42 04 September 2006, Fred wrote:
Adam:

In my experience, the Libelle 201 thermals like any
other sailplane,
except it has light wing loading and climbs like a
homesick angel in
light lift. The secret to thermalling that is often
overlooked in
instruction is speed control. If you're speeding up
and slowing down
you don't know where the lift is -- you just keep making
irregular
ovals in the sky. Watch the horizon and keep the it
a constant level
on the canopy. Go for it. Fred


AdamLibelle wrote:
Hi,

I have recently started flying a Libelle H201b and
I don't think I am
quite making the most out of it's thermalling ability.
Can anyone give
me any idea of the best speeds to fly in the thermal
and any other
useful info.

Adam